Sommaire:

Recently, topological phases of matter have attracted considerable attention due to their unique and robust properties. In particular, the possibility of finding or inducing superconductivity in a topological phase (known as topological superconductivity) has been an active area of research in recent years, for instance in quantum engineering where such a phase would be useful for quantum computing.

In this seminar, I will present a charge transport study of nanostructures of trigonal-PtBi2, a noncentrosymmetric
crystal with very strong spin-orbit coupling. In recent works (1, 2), we evidenced the superconducting properties of this material and we predict it to be a Weyl- and nodal-linesemimetal. I will focus on two main results: the discovery of 2-dimensional superconductivity at sub-kelvin temperatures, and the discovery of an anomalous planar Hall effect (APHE) in the normal phase, robust up to room temperature.

More details are given in the pdf file.

1. A. Veyrat et al., Nano Letters, ISSN: 1530-6984 (Jan. 2023).
2. A. Veyrat et al., submitted to arXiv (2023).

Pour plus d'informations, merci de contacter Jouault B.